package mug13;

/*
*  LoginFileWriter rewrites login.txt with an updated user
*  password
*
*
*  @author Brett McMillian
*  @author Louisa Poythress
*/  

import java.io.*;

public class LoginFileWriter {

	public void writeNewFile(String file, Object[] oldFile, String user, String newPass)
		throws FileNotFoundException, IOException
	{
		//Open a PrintWriter to write to login.txt
		FileWriter textFW = new FileWriter(file);
		BufferedWriter textFLW = new BufferedWriter(textFW);
		PrintWriter textWriter = new PrintWriter(textFLW, true);
		
		//Copy all the values of oldFile to newFile
		Object[] newFile = oldFile;
		
		//Search for user and update the password below it
		for (int i = 0; i < newFile.length; i += 2)
		{
			if (newFile[i] == null)
				break;
			if (newFile[i].equals(user))
				newFile[i+1] = newPass;
		}
		
		//Write each user name and password to login.txt
		for (int n = 0; n < newFile.length; n += 2)
		{
			if (newFile[n] == null)
				break;
			
			textWriter.println("Name: " + newFile[n]);
			textWriter.println("Password: " + newFile[n+1]);
		}
		
		//Close all the writers
		textFW.close();
		textFLW.close();
		textWriter.close();
	}
}